One solution to the antifreeze death problem is to require all antifreeze manufacturers to add in a non-toxic bittering agent that makes it taste awful. This will save countless lives of children and pets. Many states, and even some cities, are considering legislation requiring the addition of the bitterent denatonium benzoate to antifreeze. This would make the antifreeze virtually impossible for a child or animal to be poisoned by the usually sweet-tasting liquid. Find out if this is required where you live.